Separator.



R. W. JESSUP.

SEPARATOR.

l APPLICATION FILED APE. 10,1908.

924,358, Patented June 8, i909.

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INVENTQR. WITNESSES. KML /Mm/ 1HE IBRRls PETERS co.. wAsHnucraN, uA cA I R. W. JESSUP.v SEPARATOR.

APPLICATION FILED APE.10,190S.

924,358. Patented June 8, 1909.

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` illh||HIIIIHiIIIIfIIIllllllllllllllliil llllllllllllllllllllmlllll UNITED STATES ,PATENT F IOR.

ROBERT W. JESSUP, OF OAKLAND, CALIFORNIA, ASSIGNOR OF ONE-THIRD TO F. H. FINLEY,

OF SPOKANE, WASHINGTON, AND FAIRFAX H. WHEELAN, OF SAN FRANCISCO, CALI- FORNIA.

SEPARATOR.

To all whom it may concern:

Be it known that I, ROBERT W. JEssUP, a citizen of the United States, residing at Oakland, in the county of Alameda and State of California, have invented certain new and useful Improvements in Separators, of which the following is a specification.

This invention relates to the class of vibrating-screen separators, and it consists in the novel constructions, arrangements and combinations which will be hereinafter fully described.

I/Vhile the invention is applicable to the separation of any materials, the component particles of which differ in size or shape, it is particularly intended for the separation of grains and small seeds, as, for example, the separation of oats from wheat; of wild or thin oats from other and larger oats; and of oats and thin barleyr fromlarger ones.

The object of the invention is to various necessary adjustments and rovide work.

Referring to the accompanying drawings for a more complete explanation of the invention, Figure 1 is a plan view of the separator, the overlying curtain being broken away. Fig. 2 is a longitudinal section on the line xof Fig. 1 Fig. 3/is a cross section on the line y-fy of Fig. 1. Fig. 4 is a detail view.

enlarged, of the knocker cam and wearing disk. Fig. 5 is a face view of the same. Fig. 6 is a detail view, enlarged, showing the adjustable equalizer bar 24 in cross section. Fig. 7 is a side view of the same.

1 is a stand of'suitable character. In this stand is mounted, u on spring standards 2,v

the inclined screenrame 3, to which is secured the screen 4'which may be of any char-l acter and mesh suitable for the particular material to be separated: For example, silk,

or wire-screen, or perforated metal, or other Specification of Letters Patent.

Application filed April 10, 1908.

evicesf to more perfectly adapt the machine for' Patented Tune 8, 1909.

Serial N0. 426,191.

end-bars, and again tightened up by setting up the bolts. The side edges of the screen 4 being secured to said side-bars, the outward movement of these bars will give the proper cross tension to the screen. To easily secure this adjustment of the side-bars, stretcherbars 9 of proper length are inserted between the side-bars. In the frame 3, as here shown, there is a central fixed bar 10, which divides the frame into two sections, one section being like the other; the obj ect being to use smaller screen pieces, for better adjustment and control in operation.

The lengthwise tension of the screen is eHected by a slidable bar or bars 11 at the foot of the frame, which are movable, through the operation of the screws 12 passing through the foot-bars of said frame. The screen or screens are attached to these bars 11, and by their movement are stretched lengthwise, the other ends of the screens being attached to the head-bar of the frame.

A rapid, jarring vibration is imparted to the screen frame 3, in the direction of its length, by the following means :-At the head of the frame is a power shaft 13, mounted in the stand 1. U on this shaft, near each end, is a cam 14 with mockers in any suitable number. Mounted rotatably upon short shafts 15 in the head-bar of frame 3, are wearing `disks 16 of some suitable material, say, fiber of some nature. Against these disks the cam knockers operate, the blows being so directed that the disks turn under the contact, and thus present a continuous, durable wearing surface. The disks 16 are backed up by cushions 17 of rubber or other material, set in the frame 3, with one or more metallic washers intervening between said cushions and the disks. The disks when worn out may be readily replaced. At the foot of the frame 3 are blocks 18 which contact with a long spring 19, the ends of which are secured to the posts of the stand 1, by means of bolts 20, and said ends bear against cushions 21 in the posts, to reduce the injurious effects of vibration. At or about the middle of the length of the spring 19, and passing through it into the frame 3, is a regulating bolt 23, with a hand-nut 22 on its outer end. This is to regulate the tension of the s ring 19, to harmonize its action with the c aracter of the arring vibration desired to be imparted to the screen.

Lying over the screen or screens 4 are the yproduce any required result.

bars 24 which control and equalize the surface vibration of said screens. The bars 24 are mounted ateach end on the end-bars of the screen frame 3, the connection being an adjustable one, effected by bolts 25, springs 25 under the bars, and hand-nuts 26 on the top of the bolts, so that either or both endsoll the bars may be raised or lowered. The bars 24 lie longitudinally of the screens, in about their median lines, and they bear on the surface of said screens, preferably through the intervention el' a cushion facing 2-7 of some suitable material, to avoid injury. Suspended from the stand 41, and overlying the screen, isa curtain 28 oflsome light material, such as canvas, the height of' which above the screen may be regulated as desired.

The operation of the separator is as follows The material fed to the upper end of the screen is, by the rapid jarring vibration of the screen-fran'ie, and the vibration of the screen-surface, thrown upwardly rapidly and repeatedly, thereby eifectingsome separation of its component particles, due to agitation and difference in specific gravity. But, there results a more effective separation due to the Lip-ending of the particles in their flight, which up-ending in the case of such 1Kernels as oats, which are very oblong, is particularly advantageous, in that they are thus presented, as they descend, in the proper manner to the screen, so that they will readily pass through and leave behind those other particles which by reason of size or shape, cannot pass the screen-mesh. Further than this, also, is the yadvantage that, due to the rapid and relatively violent jarring, any partic es which wedge in the meshes of the screen, are thrown out again, thereby preventing clogging; the screen being, thus, always clean and free from obstructions. l/Vhile this is the general effect and operation of the machine, certain advantages of the construction which has been described, are now to be noted.

The adjusting` devices of the screen-frame, by which the screen is tightened and kept under proper tension, are simple, effective, and easily operated, permitting any desired tension to be given the screen surface, most eective for the material being treated. The means for giving the impulses to the screen-frame are also simple, effective and durable, and are capable of adjustment to The adjustment ofthe center of the co-acting or return spring 19 is an effective one, in enabling the operator to easily and quickly regulate its tension, to suit the vibrating force required.

The regulating bars 24 are very effective. The wire-screen being fastened at each side and end, has comparatively little vibration at these points, while at its middle the surface vibration is much greater. This results in causing the material to travel to the outer edges. This tendency is corrected by the bars 24 on the screen-surface, the pressure, of said bars equalizing the vibration over the whole surface; and as this pressure can he varied, by properly adjusting said bars at either or both ends, it follows that the equalizing effect is under perfect control.

By proper adjustment of the several paris of the separator, the stock can be made to simply flow over the screen-surface, or it can be thrown upward, say, l2 inches, or more. There is a point in this uplifting of the stoel( which will turn the particles on end, and this, with oats, jntrticularly, will result in dropping them heavy end down, and in position to pass through the screen mesh.

The required number of uplifts may he given in any case. lVith regular revolutions of the cam shaft, and proper adjustments, the separation is regular and constant. XVith an increase in revolutions, the uplift of the stock is greater, -and with a decrease. in revolutions, the uplift is less than that necessary for successful separation. To correr-t this, the bars 24 may be adjustedr to allow a higher uplift than the normal, so that at a minimum of revolutions, the uplift is equal to the normal height. But, to control an excess of uplift, the overlying curtain 2S may be used. The stock, striking this curtain, is checked and returned to the screen, thus giving the necessary number of uplifts, to accomplish the desired results.

Having thus described the invention, what is claimed as new, and is desired to be secured by Letters Patent is:-

1. In a separator, the combination of a screen-frame; supports therefor adapted. to yield to vibrating pressure; means operating against o ne end of the screen frame to impart vibratory impulses thereto; a spring extending the length of the other end of the frame and having its ends secured to stationary bearings ,1 means adjustably connecting the middle of said spring to the screen-frame for regulating the tension of said spring 5 and blocks on the screen-frame bearing on the spring at points on each side of its adjustable connection.

2. Tn a separator, the combination of a screen-frame; supports therefor adapted to yield to vibrating pressure; a rotatable shaft mounted independently of the screen-frame and extending parallel with one end thereof; knocker-cams mounted on said shaft in position to impart vibratory impulses to said. screen-frame; short shafts extending from said frame, wearing disks rotatably mounted on said short shafts in a plane at right angies to the plane of rotation of the knockercams; a spring extending the length of the other end of the frame and having its ends secured to stationary bearings means adjustably connecting the middle of said spring to the screen-frame for regulating the tension .lll

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of the spring; and bearings between the screen end and spring on each side of the ad justable connection of said spring.

3. In a separator of the screen-surface type, a frame comprising end bars having mortises, side bars having tenons adjustably itted in the mortisesv of the end bars, and bolts to hold the side bars in the position to which they are adjusted; a movable cross bar near one end of the frame and screws for adjusting said cross bar; and a screen secured at its sides to the side-bars, at one 'end to the movable cross bar, andV at the other end to one of the end bars.

4. In a separator, and in combination with a vibratable frame and a screen carried thereby, an overlying bar, separate from and disposed to press upon the screen to equalize its surface vibration.

5. In a se arator, and in combination with a vibrata le frame and a screen carried thereby, an overlying bar, separate from and disposed to press upon the screen to equalize its surface vibration, and means for adjusting said bar, to vary the extent and location of its pressure.

6. In a separator, and in combination with a vibratable frame and a screen carried thereby, an overlying bar, separate from and disposed to press upon the screen to equalize its surface vibration, and springs, bolts and nuts at the ends of the bar to raise or lower it, to vvary the extent and location of its pressure.

7. In a separator, the combination of a screen-frame; supports therefor adapted to yield to vibrating pressure; means operating against one end of the screen frame to impart vibratory im ulses thereto; a sprin extending the lengt of the other end of t e frame and having its ends secured to stationary bearings; means adjustably connecting theV WM. F. BOOTH, D. B. RICHARDS. 

